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How to define a global variable for all the functions
Hi,
Here’s a sample form:
[CODE]<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “http://www.w3.org/TR/html4/loose.dtd”>
<html>
<head>
<title>Sample form</title>
<script type=”text/javascript”>
function displayResult() {
alert(document.myForm.myInput.value);
}
function getFocus() {
if (document.myForm.myInput.value == document.myForm.myInput.defaultValue) {
document.myForm.myInput.value = “”;
}
}
function loseFocus() {
if (document.myForm.myInput.value == “”) {
document.myForm.myInput.value = document.myForm.myInput.defaultValue;
}
}
</script>
</head>
<body>
<form name=”myForm” method=”get” onsubmit=”return false;” action=””>
<input name=”myInput” value=”Hello world!” onfocus=”getFocus();” onblur=”loseFocus();”><br>
<input type=”button” onclick=”displayResult();” value=”Display input value”>
</form>
</body>
</html>
It works with no problem, but the following doesn’t:
[CODE]<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “http://www.w3.org/TR/html4/loose.dtd”>
<html>
<head>
<title>Sample form</title>
<script type=”text/javascript”>
var x = document.myForm.myInput;
function displayResult() {
alert(x.value);
}
function getFocus() {
if (x.value == x.defaultValue) {
x.value = “”;
}
}
function loseFocus() {
if (x.value == “”) {
x.value = x.defaultValue;
}
}
</script>
</head>
<body>
<form name=”myForm” method=”get” onsubmit=”return false;” action=””>
<input name=”myInput” value=”Hello world!” onfocus=”getFocus();” onblur=”loseFocus();”><br>
<input type=”button” onclick=”displayResult();” value=”Display input value”>
</form>
</body>
</html>
What’s wrong with it and how can I define a global variable to be used by all the functions?
Many thanks in advance!
Mike
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